Soundproof spraying room

According to the acoustic principle, the noise generated during spraying is controlled in the room to prevent the staff outside the room from being injured by noise pollution. After the establishment of the soundproof room, the noise emission in the operation area is lower than the "Noise Hygiene Standard for Industrial Enterprises" stipulated by the state.

The soundproof room is composed of four corner steel columns, wall panels, roofs, upper and lower grooves, corners, gap seals, etc., which not only ensures the sound insulation and overall rigidity of the room, but also pays special attention to the beauty of the appearance and thoughtful details.

L-shaped spraying soundproof room

The design of this spraying soundproof room project follows the following principles:

1. Strictly implement relevant national industry standards and general technical specifications;

2. The selected technologies are mature and reliable technologies, and have been successfully used, without any test components;

3. Design to meet the actual production process needs of customers;

4. Combined with our company's many years of professional experience and the structural characteristics of the workpiece itself, in line with the purpose of meeting the needs of users, the design and production focus on equipment stability, safety, environmental protection and energy saving;

5. People-oriented, fully from the perspective of the actual operation of operators and maintenance personnel, comprehensively consider the stability of equipment and the convenience of maintenance and maintenance.

Double-deck spraying booth

Double-layer thickened 380mm sound insulation panel, reduced to less than 75 decibels

The structure of the plate group is: 160mm thickness of the exterior wall panel, 2.0mm thick white sprayed steel plate, middle fill damping layer, asbestos board, double-layer 100Kg/m3 high solubility heavy sound absorbing cotton, waterproof and dustproof sound permeable film, metal porous sound absorbing board (perforation rate 25%), 50-60mm thickness air sound insulation layer in the middle, 160mm thickness of 2.0mm thick steel plate of interior wall panel, middle fill damping layer, asbestos board, double layer 100Kg/m3 high soluble heavy sound absorbing cotton, waterproof and dustproof sound permeable film, Metal porous acoustic absorbing board (perforation rate 25%). The total thickness is 380mm, and the sound insulation board is supported by the strength of the welded and arranged tic-tac-toe steel frame, and then pressed and formed, and the sound insulation board is smooth and scraped inside and outside, and the surface is bright and beautiful.

Acoustic panels

The structure of the plate group is: the outer wall is 2.0mm thick white sprayed steel plate, the middle filling damping layer, the asbestos board, the double-layer 100Kg/m3 high-solubility heavy sound-absorbing cotton, waterproof and dustproof sound-permeable film, and the inner wall is a metal porous sound-absorbing board (punching rate of 25%). The sound insulation board is supported by the welded tic-tac-toe steel frame for strength, and then pressed into shape, and the sound insulation board is smooth and scraped inside and outside, and the surface is bright and beautiful.

The standard panel is 970mm wide and 140mm thick, and the length can be determined by the required height of the room. The sound insulation board has been tested by noise (the tested sample does not put gypsum board), and the air sound insulation in the sound frequency range of 125~4000Hz is 42dB (A). At present, the sound insulation of the sound insulation board after adding PDF glass fiber board is larger, and the sound insulation board is assembled by a special thickened steel plate, and the cement is plugged to prevent sound leakage in the gap;

Acoustic doors

We design the soundproof door for the workpiece to enter and exit with a stepped sealing structure, the sound goes through the stepped structure to achieve the purpose of noise reduction, and the door is sealed with a sealing strip, which plays a sealing role when the door is opened and closed, reducing the leakage of sound.

Soundproof windows

Observation windows are provided on the soundproof wall panels and soundproof doors, and the observation windows are made of transparent tempered glass, and the number of observation windows on the soundproof panels is specified by the owner. The specification of the observation window is: 700*1000 (H)mm, which is a two-channel double tempered glass structure; The specification of the observation window on the soundproof door is: 400*400 (H)mm, and its sound insulation is basically equivalent to that of the wallboard.

Intake and exhaust mufflers

In order to meet the needs of indoor dust extraction and air suction, the spraying room is equipped with air inlet muffler and exhaust muffler to keep the indoor negative pressure balanced. While the airflow passes through the muffler, the indoor noise is absorbed by the muffler. Prevent noise from spreading outward through the air intake.

Application Scenarios & Comprehensive Operation Guide for Sound-Proof Spraying Booths

1. Industry-Specific Application Scenarios

Automotive Manufacturing Industry

• Application: Spraying of automobile bodies and key components (e.g., bumpers, door panels).

• Value: Secures consistent coating appearance and uniformity, curbs workshop noise pollution, and reduces operators’ exposure to harmful substances in paint mist.

Machinery Manufacturing Sector

• Application: Spraying of large mechanical equipment enclosures (e.g., for industrial pumps, compressors) and precision parts (e.g., transmission gears).

• Value: Guarantees coating quality, enhances coating adhesion and long-term durability, controls operational noise, and provides a dust-free, stable spraying environment.

Aerospace Industry

• Application: Spraying of aircraft fuselages, structural components, and engine blades (for wear-resistant or high-temperature protective coatings).

• Value: Ensures high-standard coating adhesion to meet strict aerospace performance requirements, complies with rigorous environmental and safety regulations, and extends engine blade service life and operational reliability.

Shipbuilding Industry

• Application: Spraying of ship hulls (anti-corrosive coatings) and internal facilities (e.g., cabin walls, pipe surfaces).

• Value: Enhances coating resistance to marine corrosion, prolongs the ship’s service life, reduces environmental pollution from paint waste, and protects crew health by isolating harmful fumes.

Furniture Manufacturing Industry

• Application: Spraying of wooden furniture (e.g., cabinets, chairs) and metal furniture (e.g., steel frames, aluminum alloy tables).

• Value: Contains paint mist and toxic volatile gases, optimizes internal ventilation to speed up solvent evaporation, lowers spraying noise, and ensures a smooth, uniform furniture coating finish.

Electronic Equipment Manufacturing Industry

• Application: Spraying of electronic product casings (e.g., smartphone shells, computer chassis) for protection or aesthetic enhancement.

• Value: Achieves even, smooth coatings to meet electronic products’ precision appearance requirements, reduces noise interference with nearby electronic assembly processes, and maintains a clean, quiet production environment.

2. Product Operation Guide

I. Pre-Operation Preparation

Equipment & Structure Inspection

• Check the sound-proof spraying booth’s structure (walls, sealed doors, observation windows) for cracks, deformation, or seal failure; repair or replace damaged parts immediately.

• Inspect the connection and sealing of spraying equipment (spray guns, material delivery pipelines, pressure tanks) for leaks; confirm that equipment parameters (e.g., pressure range, flow rate) match the current spraying task requirements.

• Test the ventilation system (fans, air ducts, filters, mufflers) for normal operation: check for pipeline blockages, ensure filters are clean, and verify that noise-reduction performance meets the standard.

Environment Cleaning

• Clean dust, paint residues, and debris from the interior (spraying platform, floor) and exterior (entrance, surrounding areas) of the booth.

• Ensure passages around the booth are unobstructed; prohibit stacking of irrelevant materials (e.g., tools, packaging) to avoid affecting operation and emergency evacuation.

Coating & Auxiliary Material Preparation

• Select coatings (e.g., anti-corrosive, heat-resistant) based on the workpiece’s material and performance needs; check coating expiration dates and uniformity (no sedimentation), and stir or dilute as required.

• Prepare auxiliary materials (e.g., diluents, thinners) and mix them in the specified proportion in a well-ventilated area outside the booth; label mixed materials clearly with type and preparation time.

Operator Protection

• Operators must wear full protective gear: anti-static work clothes, organic vapor gas masks (with activated carbon filters), chemical-resistant gloves, and noise-canceling earplugs/earmuffs.

II. Spraying Operation Procedures

Workpiece Fixing

• Move the pre-cleaned workpiece into the booth using a lifting or conveying device; secure it with a dedicated clamping fixture to avoid surface scratches. Ensure the fixture position allows full coverage of all spraying surfaces (no dead angles).

Parameter Adjustment

• Adjust spraying equipment parameters according to the coating type (e.g., high-viscosity coatings require higher pressure) and workpiece size: set spray pressure (0.3–0.6 MPa, depending on coating), material flow rate, spray gun-workpiece distance (15–25 cm), and spray angle (90° for flat surfaces).

• Adjust ventilation system parameters: set ventilation volume to 8–12 air changes per hour, and confirm the system runs continuously during spraying.

Formal Spraying

• Turn on the coating delivery system and let the coating circulate for 1–2 minutes to ensure stable pressure and uniform material flow.

• Hold the spray gun with a stable grip, and spray along a preset route (e.g., horizontal or vertical strokes); maintain a consistent gun movement speed (30–50 cm/s) and distance from the workpiece to avoid uneven coating.

• For multi-layer spraying, wait for the previous layer to dry (follow coating instructions for drying time) before applying the next layer; observe the coating effect in real time (e.g., for sagging or pinholes) and adjust parameters promptly if abnormalities occur.

III. Post-Operation Handling

Equipment Shutdown

• After spraying, first turn off the coating delivery system and let residual coating in the spray gun and pipelines flow back to the pressure tank; then cut off the main power supply of the spraying equipment.

• Keep the ventilation system running for 15–30 minutes to discharge residual harmful gases, then shut it down; close the booth’s sealed door and wait for the internal environment to cool down.

Cleaning & Maintenance

• Disassemble the spray gun, nozzles, and pipelines immediately; clean them with a dedicated solvent (matching the coating type) to remove residual paint and prevent blockages.

• Wipe off paint stains on the booth’s internal floor, walls, and clamping fixtures with a solvent-soaked cloth; dispose of waste solvents and used filters in accordance with hazardous waste regulations. Check the ventilation filter’s contamination level—replace it if the filter resistance exceeds the specified value.

Workpiece Inspection & Curing

• Remove the sprayed workpiece from the booth and place it in a dedicated curing area; perform drying or curing (e.g., air-drying, oven curing) according to the coating’s technical requirements.

• Inspect the workpiece coating: check appearance (flatness, no bubbles/sagging, consistent color) and test physical properties (adhesion via cross-cut test, hardness via pencil hardness test); mark unqualified workpieces for rework.

Record Keeping

• Document key operation information in a log: spraying date and time, workpiece model and quantity, coating type and batch, equipment parameters (pressure, flow rate), encountered problems (e.g., nozzle blockage) and corresponding solutions (e.g., nozzle replacement).

Q: Can the ventilation system effectively exhaust paint mist and harmful gases? Will there be any residue?

A: The ventilation system we equipped is carefully designed. The fans are of high-power and large-air-volume models, the ventilation ducts are reasonably laid out, and high-efficiency filters are installed. Under normal operating conditions, it can exhaust paint mist and harmful gases, such as formaldehyde and benzene, in a timely and thorough manner, ensuring that the concentration of harmful gases in the booth is always kept below the safety standard without obvious residue, safeguarding the health and safety of operators.

Q: What standard specifications are available for selection? If my workpiece has special dimensions, can it be customized?

A: We have a professional design team that can customize the soundproof spraying booth according to the detailed dimensions of your workpiece and spraying process requirements to ensure a perfect fit for your production needs.

Q: Is the subsequent operation cost of using this soundproof spraying booth high?

A: The subsequent operation cost mainly includes aspects such as energy consumption and consumable replacement. In terms of energy consumption, the ventilation system and some temperature control devices are the main energy-consuming parts, but our products use energy-saving equipment, and the power consumption is within a reasonable range during normal operation. In terms of consumables, such as filters and vulnerable parts of spray guns, the replacement cycle is relatively long and the cost is controllable. Overall, compared with the improvement in production efficiency it brings, the subsequent operation cost is not high and can create a good cost performance for your enterprise.